Bushnell Elite Tactical Illuminated G2DMR FFP Reticle Riflescope ( 3.5-21x50-mm) Features side focus parallax adjustment for adjustable long-range accuracy; .1 Mil Click Value Elite tactical riflescope with 3.5x to 21x magnification, 50-millimeter objective lens, and G2 reticle; precision delivery from tight quarters to the longest distances Rainguard HD for a clear view in any conditions; Ultra Wide Band Coating for increased clarity in low light Long range capability all in a short 13.2" overall length; 34-millimeter tube construction; "black-out" concealment; argon purged for long-term reliability 3-inch sunshade included; limited lifetime warranty